51172475 has 12 divisors (see below), whose sum is σ = 65501760. Its totient is φ = 39616800.

The previous prime is 51172441. The next prime is 51172477. The reversal of 51172475 is 57427115.

It is not a de Polignac number, because 51172475 - 2²² = 46978171 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (51172477) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32240 + ... + 33789.

It is an arithmetic number, because the mean of its divisors is an integer number (5458480).

Almost surely, 2^51172475 is an apocalyptic number.

51172475 is a deficient number, since it is larger than the sum of its proper divisors (14329285).

51172475 is a wasteful number, since it uses less digits than its factorization.

51172475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66070 (or 66065 counting only the distinct ones).

The product of its digits is 9800, while the sum is 32.

The square root of 51172475 is about 7153.4939015840. The cubic root of 51172475 is about 371.2605532339.

The spelling of 51172475 in words is "fifty-one million, one hundred seventy-two thousand, four hundred seventy-five".